//定制请求的实例

//导入axios  npm install axios
import axios from 'axios';
import { ElMessage } from 'element-plus'
//定义一个变量,记录公共的前缀  ,  baseURL
const baseURL = '/api';
const instance = axios.create({baseURL})
//添加请求拦截器
import { useTokenStore } from '@/stores/token.js';
instance.interceptors.request.use(
    (config)=>{
        const tokenStore = useTokenStore();
        //判断是否存在token
       if(tokenStore.token){
           config.headers.Authorization = tokenStore.token
        }
        return config;
    },
    (err)=>{
        Promise.reject(err)
    }
)
import router from '@/router';
//添加响应拦截器
instance.interceptors.response.use(
    result=>{
        if(result.data.code===200){
        return result.data;
    }
        //alert(result.data.msg?result.data.msg:'服务异常')
        ElMessage.error(result.data.msg?result.data.msg:'服务异常')
        return Promise.reject(result.data)
    },
    err=>{
        //判断响应状态码
        if(err.response.status===401){
            ElMessage.error('请先登录')
            router.push('/login')
        }else{
            alert('服务异常')
        }
        return Promise.reject(err);//异步的状态转化成失败的状态
    }
)

export default instance;